xenocara/xserver/composite/compinit.c
2019-07-27 07:57:06 +00:00

465 lines
15 KiB
C

/*
* Copyright (c) 2006, Oracle and/or its affiliates. All rights reserved.
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice (including the next
* paragraph) shall be included in all copies or substantial portions of the
* Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
* DEALINGS IN THE SOFTWARE.
*
* Copyright © 2003 Keith Packard
*
* Permission to use, copy, modify, distribute, and sell this software and its
* documentation for any purpose is hereby granted without fee, provided that
* the above copyright notice appear in all copies and that both that
* copyright notice and this permission notice appear in supporting
* documentation, and that the name of Keith Packard not be used in
* advertising or publicity pertaining to distribution of the software without
* specific, written prior permission. Keith Packard makes no
* representations about the suitability of this software for any purpose. It
* is provided "as is" without express or implied warranty.
*
* KEITH PACKARD DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
* INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
* EVENT SHALL KEITH PACKARD BE LIABLE FOR ANY SPECIAL, INDIRECT OR
* CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE,
* DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
* TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
* PERFORMANCE OF THIS SOFTWARE.
*/
#ifdef HAVE_DIX_CONFIG_H
#include <dix-config.h>
#endif
#include "compint.h"
#include "compositeext.h"
DevPrivateKeyRec CompScreenPrivateKeyRec;
DevPrivateKeyRec CompWindowPrivateKeyRec;
DevPrivateKeyRec CompSubwindowsPrivateKeyRec;
static Bool
compCloseScreen(ScreenPtr pScreen)
{
CompScreenPtr cs = GetCompScreen(pScreen);
Bool ret;
free(cs->alternateVisuals);
pScreen->CloseScreen = cs->CloseScreen;
pScreen->InstallColormap = cs->InstallColormap;
pScreen->ChangeWindowAttributes = cs->ChangeWindowAttributes;
pScreen->ReparentWindow = cs->ReparentWindow;
pScreen->ConfigNotify = cs->ConfigNotify;
pScreen->MoveWindow = cs->MoveWindow;
pScreen->ResizeWindow = cs->ResizeWindow;
pScreen->ChangeBorderWidth = cs->ChangeBorderWidth;
pScreen->ClipNotify = cs->ClipNotify;
pScreen->UnrealizeWindow = cs->UnrealizeWindow;
pScreen->RealizeWindow = cs->RealizeWindow;
pScreen->DestroyWindow = cs->DestroyWindow;
pScreen->CreateWindow = cs->CreateWindow;
pScreen->CopyWindow = cs->CopyWindow;
pScreen->PositionWindow = cs->PositionWindow;
pScreen->GetImage = cs->GetImage;
pScreen->GetSpans = cs->GetSpans;
pScreen->SourceValidate = cs->SourceValidate;
free(cs);
dixSetPrivate(&pScreen->devPrivates, CompScreenPrivateKey, NULL);
ret = (*pScreen->CloseScreen) (pScreen);
return ret;
}
static void
compInstallColormap(ColormapPtr pColormap)
{
VisualPtr pVisual = pColormap->pVisual;
ScreenPtr pScreen = pColormap->pScreen;
CompScreenPtr cs = GetCompScreen(pScreen);
int a;
for (a = 0; a < cs->numAlternateVisuals; a++)
if (pVisual->vid == cs->alternateVisuals[a])
return;
pScreen->InstallColormap = cs->InstallColormap;
(*pScreen->InstallColormap) (pColormap);
cs->InstallColormap = pScreen->InstallColormap;
pScreen->InstallColormap = compInstallColormap;
}
static void
compCheckBackingStore(WindowPtr pWin)
{
if (pWin->backingStore != NotUseful && !pWin->backStorage) {
compRedirectWindow(serverClient, pWin, CompositeRedirectAutomatic);
pWin->backStorage = TRUE;
}
else if (pWin->backingStore == NotUseful && pWin->backStorage) {
compUnredirectWindow(serverClient, pWin,
CompositeRedirectAutomatic);
pWin->backStorage = FALSE;
}
}
/* Fake backing store via automatic redirection */
static Bool
compChangeWindowAttributes(WindowPtr pWin, unsigned long mask)
{
ScreenPtr pScreen = pWin->drawable.pScreen;
CompScreenPtr cs = GetCompScreen(pScreen);
Bool ret;
pScreen->ChangeWindowAttributes = cs->ChangeWindowAttributes;
ret = pScreen->ChangeWindowAttributes(pWin, mask);
if (ret && (mask & CWBackingStore) &&
pScreen->backingStoreSupport != NotUseful)
compCheckBackingStore(pWin);
pScreen->ChangeWindowAttributes = compChangeWindowAttributes;
return ret;
}
static void
compGetImage(DrawablePtr pDrawable,
int sx, int sy,
int w, int h,
unsigned int format, unsigned long planemask, char *pdstLine)
{
ScreenPtr pScreen = pDrawable->pScreen;
CompScreenPtr cs = GetCompScreen(pScreen);
pScreen->GetImage = cs->GetImage;
if (pDrawable->type == DRAWABLE_WINDOW)
compPaintChildrenToWindow((WindowPtr) pDrawable);
(*pScreen->GetImage) (pDrawable, sx, sy, w, h, format, planemask, pdstLine);
cs->GetImage = pScreen->GetImage;
pScreen->GetImage = compGetImage;
}
static void
compGetSpans(DrawablePtr pDrawable, int wMax, DDXPointPtr ppt, int *pwidth,
int nspans, char *pdstStart)
{
ScreenPtr pScreen = pDrawable->pScreen;
CompScreenPtr cs = GetCompScreen(pScreen);
pScreen->GetSpans = cs->GetSpans;
if (pDrawable->type == DRAWABLE_WINDOW)
compPaintChildrenToWindow((WindowPtr) pDrawable);
(*pScreen->GetSpans) (pDrawable, wMax, ppt, pwidth, nspans, pdstStart);
cs->GetSpans = pScreen->GetSpans;
pScreen->GetSpans = compGetSpans;
}
static void
compSourceValidate(DrawablePtr pDrawable,
int x, int y,
int width, int height, unsigned int subWindowMode)
{
ScreenPtr pScreen = pDrawable->pScreen;
CompScreenPtr cs = GetCompScreen(pScreen);
pScreen->SourceValidate = cs->SourceValidate;
if (pDrawable->type == DRAWABLE_WINDOW && subWindowMode == IncludeInferiors)
compPaintChildrenToWindow((WindowPtr) pDrawable);
if (pScreen->SourceValidate)
(*pScreen->SourceValidate) (pDrawable, x, y, width, height,
subWindowMode);
cs->SourceValidate = pScreen->SourceValidate;
pScreen->SourceValidate = compSourceValidate;
}
/*
* Add alternate visuals -- always expose an ARGB32 and RGB24 visual
*/
static DepthPtr
compFindVisuallessDepth(ScreenPtr pScreen, int d)
{
int i;
for (i = 0; i < pScreen->numDepths; i++) {
DepthPtr depth = &pScreen->allowedDepths[i];
if (depth->depth == d) {
/*
* Make sure it doesn't have visuals already
*/
if (depth->numVids)
return 0;
/*
* looks fine
*/
return depth;
}
}
/*
* If there isn't one, then it's gonna be hard to have
* an associated visual
*/
return 0;
}
/*
* Add a list of visual IDs to the list of visuals to implicitly redirect.
*/
static Bool
compRegisterAlternateVisuals(CompScreenPtr cs, VisualID * vids, int nVisuals)
{
VisualID *p;
p = reallocarray(cs->alternateVisuals,
cs->numAlternateVisuals + nVisuals, sizeof(VisualID));
if (p == NULL)
return FALSE;
memcpy(&p[cs->numAlternateVisuals], vids, sizeof(VisualID) * nVisuals);
cs->alternateVisuals = p;
cs->numAlternateVisuals += nVisuals;
return TRUE;
}
Bool
CompositeRegisterAlternateVisuals(ScreenPtr pScreen, VisualID * vids,
int nVisuals)
{
CompScreenPtr cs = GetCompScreen(pScreen);
return compRegisterAlternateVisuals(cs, vids, nVisuals);
}
Bool
CompositeRegisterImplicitRedirectionException(ScreenPtr pScreen,
VisualID parentVisual,
VisualID winVisual)
{
CompScreenPtr cs = GetCompScreen(pScreen);
CompImplicitRedirectException *p;
p = reallocarray(cs->implicitRedirectExceptions,
cs->numImplicitRedirectExceptions + 1, sizeof(p[0]));
if (p == NULL)
return FALSE;
p[cs->numImplicitRedirectExceptions].parentVisual = parentVisual;
p[cs->numImplicitRedirectExceptions].winVisual = winVisual;
cs->implicitRedirectExceptions = p;
cs->numImplicitRedirectExceptions++;
return TRUE;
}
typedef struct _alternateVisual {
int depth;
CARD32 format;
} CompAlternateVisual;
static CompAlternateVisual altVisuals[] = {
#if COMP_INCLUDE_RGB24_VISUAL
{24, PICT_r8g8b8},
#endif
{32, PICT_a8r8g8b8},
};
static Bool
compAddAlternateVisual(ScreenPtr pScreen, CompScreenPtr cs,
CompAlternateVisual * alt)
{
VisualPtr visual;
DepthPtr depth;
PictFormatPtr pPictFormat;
unsigned long alphaMask;
/*
* The ARGB32 visual is always available. Other alternate depth visuals
* are only provided if their depth is less than the root window depth.
* There's no deep reason for this.
*/
if (alt->depth >= pScreen->rootDepth && alt->depth != 32)
return FALSE;
depth = compFindVisuallessDepth(pScreen, alt->depth);
if (!depth)
/* alt->depth doesn't exist or already has alternate visuals. */
return TRUE;
pPictFormat = PictureMatchFormat(pScreen, alt->depth, alt->format);
if (!pPictFormat)
return FALSE;
if (ResizeVisualArray(pScreen, 1, depth) == FALSE) {
return FALSE;
}
visual = pScreen->visuals + (pScreen->numVisuals - 1); /* the new one */
/* Initialize the visual */
visual->bitsPerRGBValue = 8;
if (PICT_FORMAT_TYPE(alt->format) == PICT_TYPE_COLOR) {
visual->class = PseudoColor;
visual->nplanes = PICT_FORMAT_BPP(alt->format);
visual->ColormapEntries = 1 << visual->nplanes;
}
else {
DirectFormatRec *direct = &pPictFormat->direct;
visual->class = TrueColor;
visual->redMask = ((unsigned long) direct->redMask) << direct->red;
visual->greenMask =
((unsigned long) direct->greenMask) << direct->green;
visual->blueMask = ((unsigned long) direct->blueMask) << direct->blue;
alphaMask = ((unsigned long) direct->alphaMask) << direct->alpha;
visual->offsetRed = direct->red;
visual->offsetGreen = direct->green;
visual->offsetBlue = direct->blue;
/*
* Include A bits in this (unlike GLX which includes only RGB)
* This lets DIX compute suitable masks for colormap allocations
*/
visual->nplanes = Ones(visual->redMask |
visual->greenMask |
visual->blueMask | alphaMask);
/* find widest component */
visual->ColormapEntries = (1 << max(Ones(visual->redMask),
max(Ones(visual->greenMask),
Ones(visual->blueMask))));
}
/* remember the visual ID to detect auto-update windows */
compRegisterAlternateVisuals(cs, &visual->vid, 1);
return TRUE;
}
static Bool
compAddAlternateVisuals(ScreenPtr pScreen, CompScreenPtr cs)
{
int alt, ret = 0;
for (alt = 0; alt < ARRAY_SIZE(altVisuals); alt++)
ret |= compAddAlternateVisual(pScreen, cs, altVisuals + alt);
return ! !ret;
}
Bool
compScreenInit(ScreenPtr pScreen)
{
CompScreenPtr cs;
if (!dixRegisterPrivateKey(&CompScreenPrivateKeyRec, PRIVATE_SCREEN, 0))
return FALSE;
if (!dixRegisterPrivateKey(&CompWindowPrivateKeyRec, PRIVATE_WINDOW, 0))
return FALSE;
if (!dixRegisterPrivateKey(&CompSubwindowsPrivateKeyRec, PRIVATE_WINDOW, 0))
return FALSE;
if (GetCompScreen(pScreen))
return TRUE;
cs = (CompScreenPtr) malloc(sizeof(CompScreenRec));
if (!cs)
return FALSE;
cs->overlayWid = FakeClientID(0);
cs->pOverlayWin = NULL;
cs->pOverlayClients = NULL;
cs->pendingScreenUpdate = FALSE;
cs->numAlternateVisuals = 0;
cs->alternateVisuals = NULL;
cs->numImplicitRedirectExceptions = 0;
cs->implicitRedirectExceptions = NULL;
if (!compAddAlternateVisuals(pScreen, cs)) {
free(cs);
return FALSE;
}
if (!disableBackingStore)
pScreen->backingStoreSupport = WhenMapped;
cs->PositionWindow = pScreen->PositionWindow;
pScreen->PositionWindow = compPositionWindow;
cs->CopyWindow = pScreen->CopyWindow;
pScreen->CopyWindow = compCopyWindow;
cs->CreateWindow = pScreen->CreateWindow;
pScreen->CreateWindow = compCreateWindow;
cs->DestroyWindow = pScreen->DestroyWindow;
pScreen->DestroyWindow = compDestroyWindow;
cs->RealizeWindow = pScreen->RealizeWindow;
pScreen->RealizeWindow = compRealizeWindow;
cs->UnrealizeWindow = pScreen->UnrealizeWindow;
pScreen->UnrealizeWindow = compUnrealizeWindow;
cs->ClipNotify = pScreen->ClipNotify;
pScreen->ClipNotify = compClipNotify;
cs->ConfigNotify = pScreen->ConfigNotify;
pScreen->ConfigNotify = compConfigNotify;
cs->MoveWindow = pScreen->MoveWindow;
pScreen->MoveWindow = compMoveWindow;
cs->ResizeWindow = pScreen->ResizeWindow;
pScreen->ResizeWindow = compResizeWindow;
cs->ChangeBorderWidth = pScreen->ChangeBorderWidth;
pScreen->ChangeBorderWidth = compChangeBorderWidth;
cs->ReparentWindow = pScreen->ReparentWindow;
pScreen->ReparentWindow = compReparentWindow;
cs->InstallColormap = pScreen->InstallColormap;
pScreen->InstallColormap = compInstallColormap;
cs->ChangeWindowAttributes = pScreen->ChangeWindowAttributes;
pScreen->ChangeWindowAttributes = compChangeWindowAttributes;
cs->CloseScreen = pScreen->CloseScreen;
pScreen->CloseScreen = compCloseScreen;
cs->GetImage = pScreen->GetImage;
pScreen->GetImage = compGetImage;
cs->GetSpans = pScreen->GetSpans;
pScreen->GetSpans = compGetSpans;
cs->SourceValidate = pScreen->SourceValidate;
pScreen->SourceValidate = compSourceValidate;
dixSetPrivate(&pScreen->devPrivates, CompScreenPrivateKey, cs);
RegisterRealChildHeadProc(CompositeRealChildHead);
return TRUE;
}